I'm not sure how well this holds. Of the thirteen episodes focused on the character of Jadzia, only six were focused on the Trill experience. None came after Rejoined. On the other hand, all three Ezri episodes were Trill episodes. Half as many in only a fraction of the time (although given how badly botched the original concept of Prodigal Daughter was, there should only have been two episodes. ) Jadzia was the old soul, perfectly, almost seemlessly integrated. Ezri was the new soul trying to figure out who she was or if her previous ego was even relevant to her new personality. Arguably , Jadzia could have used more of the latter. Instead, she became evermore just an old soul than someone with a complex personality.